20268545590 has 8 divisors (see below), whose sum is σ = 36483382080. Its totient is φ = 8107418232.

The previous prime is 20268545567. The next prime is 20268545639. The reversal of 20268545590 is 9554586202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20268545590.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013427270 + ... + 1013427289.

It is an arithmetic number, because the mean of its divisors is an integer number (4560422760).

Almost surely, 2^20268545590 is an apocalyptic number.

20268545590 is a deficient number, since it is larger than the sum of its proper divisors (16214836490).

20268545590 is a wasteful number, since it uses less digits than its factorization.

20268545590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026854566.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 20268545590 in words is "twenty billion, two hundred sixty-eight million, five hundred forty-five thousand, five hundred ninety".